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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
Panchromatic trichromophoric sensitizer for dye-sensitized solar cells using antenna effect
Julien Warnan1, Fabien Buchet, Yann Pellegrin
1Laboratoire CEISAM, Equipe d'ingénierie et de photonique moléculaire UMR CNRS 6230 - Bât. 4 Faculté des Sciences et des Techniques de Nantes BP 92208 2, rue de la Houssinière 44322 Nantes cedex 03, France.
Abstract:
The first trichromophoric sensitizer, consisting of covalently linked boradiazaindacene (BODIPY), zinc porphyrin (ZnP), and squaraine (SQ) units, has been synthesized by Heck alkynylation to obtain a panchromatic dye, for dye sensitized solar cells (DSSCs). Efficient intramolecular energy transfers (ET) were observed between all chromophoric subunits and enhance the overall conversion efficiency by 25%. The antenna effect is demonstrated by the photoaction spectrum which features all of a chromophore's absorption bands.
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